Subranging technique using superconducting technology

Patent · Wed Jan 01 00:00:00 EST 2003

OSTI ID:875003

Gupta, Deepnarayan

Subranging techniques using "digital SQUIDs" are used to design systems with large dynamic range, high resolution and large bandwidth. Analog-to-digital converters (ADCs) embodying the invention include a first SQUID based "coarse" resolution circuit and a second SQUID based "fine" resolution circuit to convert an analog input signal into "coarse" and "fine" digital signals for subsequent processing. In one embodiment, an ADC includes circuitry for supplying an analog input signal to an input coil having at least a first inductive section and a second inductive section. A first superconducting quantum interference device (SQUID) is coupled to the first inductive section and a second SQUID is coupled to the second inductive section. The first SQUID is designed to produce "coarse" (large amplitude, low resolution) output signals and the second SQUID is designed to produce "fine" (low amplitude, high resolution) output signals in response to the analog input signals.

• Research Organization: Hypres, Inc., Elmsford, NY (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: FG02-98ER82799
• Assignee: Hypres, Inc. (Elmsford, NY)
• Patent Number(s): 6,509,853
• Application Number: 09/950,993
• OSTI ID: 875003
• Resource Relation: Patent File Date: 2001 Sep 13
• Country of Publication: United States
• Language: English

Related Subjects

subranging
technique
superconducting
technology
techniques
digital
squids
design
systems
dynamic
range
resolution
bandwidth
analog-to-digital
converters
adcs
embodying
squid
based
coarse
circuit
fine
convert
analog
input
signal
signals
subsequent
processing
embodiment
adc
circuitry
supplying
coil
inductive
section
quantum
interference
device
coupled
designed
produce
amplitude
output
response
output signal
input signal
interference device
analog-to-digital converter
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